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Mohammad Reza Akbarpour

Mohammad Reza Akbarpour

Academic rank: Professor
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Education: PhD.
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Faculty: 1
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Research

Title
Pulse-reverse electrodeposition of Ni-Co/graphene composite films with high hardness and electrochemical behaviour
Type
JournalPaper
Keywords
Electrodeposition Nanocomposites Graphene Coating
Year
2023
Journal DIAMOND AND RELATED MATERIALS
DOI
Researchers Mohammad Reza Akbarpour ، Farid Gharibi Asl ،

Abstract

This study reports the production of functional Ni-Co/graphene coating obtained by pulse-reverse current (PRC) electrodeposition method in Ni-Co plating bath containing graphene (Gr) to be co-deposited. Effects of graphene concentration on the morphology, microstructure, microhardness, and electrochemical behaviour of the resulting Ni-Co/graphene thin film were investigated. It was found that Gr introduced into the electrolyte and its concentration affected the composition as well as the structure of the composite coatings. A higher Gr concentration in the electroplating bath led to a higher Co concentration in Ni-Co alloy coatings. Ni-Co alloys and Ni-Co/Gr composite coatings exhibited a compact surface under PRC current, an average crystallite size in the range of 8–10 nm, and a solid solution structure of Ni (Co). The electrochemical behaviour of the composite coating improved with increasing Gr content, but decreased with higher Gr concentration (0.8 g/l). Ni-Co/Gr nanocomposite coating also exhibited a higher microhardness of 610 HV than monolithic Ni-Co coating of 458 HV.